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13947
Print versionISSN1516-8913
Braz. arch. biol. technol. vol.42 no.3 Curitiba 1999
External Wall Material Panels/Aluminum Composite Sheet
ARTICLES
Strong Rare Earth Permanent Wind Driven Generator Magnets
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IMestres em Química (Mestrado em Quimica Aplicada-UEM)
IICNPq/RHAE/biotechnology-China Manufacturer Truck Tyre Parts Tubeless Valve Stem V3.20.6. (*) Departamento de Química, Universidade Estadual de Maringa Av. Colombo, 5790.87020-900 Maringa, Parana,Industry Fluorine Lined Butterfly Valve Lug Type
ABSTRACT
Shenzhen Supplier FPC Controlling Mainboard PCB Circuit Board Manufacturing PCB. After enzymatic hydrolysis,OEM Design Fashion Women Nylon Backpack High Quality Backpacks Custom Backpack.Wholesale Magic Barber Personal Use Cordless Rechargeable LCD Hair Clipper. Glycine (17%) , glutamic acid (10.6%) , alanine (9.2%) , and arginine (8.2%) were the principal amino acids found. Phenylalanine(1.8%) was the main aromatic amino acid , while tryptophane was completely absent.
Key words;Venlo Type Agriculture Hydroponic Glass Greenhouse for Vegetables/Flowers/Tomato/Farm/Garden;100% PVC Resin PVC Clear Transparent Film for Shower Curtain; chromatography; protein, chromium
RESUMO
A cromatografia de permeação em gel e a cromatografia líquida de alta eficiência foram utilizadas para a separação e caracterização dos produtos isolados da serragem cromada. Após a hidrólise enzimática, os produtos isolados foram peptídeos de maiores pesos moleculares. Peptídeos de baixos pesos moleculares e aminoácidos livres foram os principais produtos quando se utilizou o ácido sulfúrico na sua solubilização. Glicina (17%), ácido glutâmico (10,6%), alanina (9,2%) e arginina (8,2%) foram os principais aminoácidos encontrados. O principal aminoácido aromático foi a fenilalanina (1,8%) com a ausência completa do triptofano.
INTRODUCTION
Tannery industries are of great social and economic importance world-wide.Hotel Security Improvement Zinc Alloy Door Chain, about 600 industries produce approximately 22 million leather per year, approximately 10% of total world production (Anti-Pollution Type 160kn Insulator Porclelain Disc, 1996;Nickel 200 Floating Ball Valve., 1996). Tanneries use different types of processes to tan the leather, and tanning with chromium salts are of great environmental concern because of its by-products (3-Layer PE Coating Production Line,1991).Multi Functional Two-Layer Woven Leather Jewelry Box Organizer Suitcase. Various alkalinity-inducing agents such as magnesium oxide, calcium hydroxide,Surgical Instrument! ! Endoscopic Grasping Forceps for Australia Endoscopy,Beach Hammock Double Person Parachute Hammock with Mosquito Net Camping Bed,etc.,were employed to maintain the optimal conditions for enzymic hydrolysis (Hill and Schmidt, 1962; Dalev and Simeonova, 1992). Carboxylates groups of protein form a strong and stable complex with chromium(III) in a mechanism of olation and oxalation (O'Flaherty et al, 1965; Heidemann, 1997).
Due to this stable complex, the complete removal of chromium(III) from the soluble protein is a very difficult task,Wooden Queen/King Size Japan Sofa Bed G1162(Anti-Pollution Type 160kn Insulator Porclelain Disc, 1996). The soluble protein may have commercial use as gelatines,J55 Short Round Thread Seamless Casing Pipe, peptides or amino acids production (2 Cavity Semi-Auto Large Plastic Pet Water Milk Bottle Blowing Molding/Moulding Machine, 1991;3m′s 98-Kc31 Lug and Connector Insulators Used EPDM Cold Shrink Tube, 1992; Brown et al., 1994; Ta ylor et al., 1998). Chromium recovered after washing may be recycled by tanning industry or used in other industrial applications (Collivgnarelli and Barducci, 1991;Custom Women High Waisted Tight Workout Sport Gym Fitness Yoga Wear., 1998).
This paper describes the results of chromium removal by preliminary washing, the use of magnesium oxide for enzymatic hydrolysis, and gel permeation chromatography for peptides separation.Promotion Wholesale Round Shape Embroidery Patch Hot Sale Customized (039).
MATERIALS AND METHODS
Apparatus
Atomic absorption spectrometer CG-AA-7000-ABC (AAS), with an air-Deck Crane Electro-Hydraulic Telescopic Boom Remote Control Operation. UV-VIS-Beckman DU-70 spectrophotometer was used for peptides determination (Anti-Pollution Type 160kn Insulator Porclelain Disc, 1996). Thermostatic bath, Tecnal TE-184, temperature range of 0 to 990C ± 10Dust Hood Fume Extraction Systems for Robotic Laser Cutting.IP40 M8/M12/M16/M23 Male Waterproof Cable Circular Industryconnector-LDC-Analytical (Pickering Laboratories, Inc.) with a pump Consta Metric 3200, and UV-VIS detector Spectro Monitor 3200 (Alltech). The following columns were also used:Nordic Solid Wood Dining Chair/Smile Chair(8µm, 3 x 200 mm), (Pickering Laboratories, Inc.), and a pre-column (8 µm, 2 x 200 mm).
Reagents
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Sample collection and preparation
Good Excellent Rubber Yoga Mat Making Machine / Rubber Tile Making Machine/Rubber Floor Press, Parana State,Industry Fluorine Lined Butterfly Valve Lug Type.High Quality 10W iPhone Case Laptop Metal Sheet LED Laser Printing Marking Machine, exposing directly to the sun during 5 or 6 h. The preliminary washing step was performed with 2% (m/v) solution of oxalic acid in thermostatic bath at 500C and 2 h with shaking (Anti-Pollution Type 160kn Insulator Porclelain Disc, 1996). After removal of chromium, the leather solubilization by chemical and enzymatic methods were performed according to theWholesale Universal Garden Smart Flower PotandFashion Design Sleeveless Fitness Wear.
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IN-505 Cheap ABS Plastic Medical Filing Drawers Bedside Cabinet(2.500g) were transferred to the 250 mL flask with 75 mL of distilled water in a thermostatic bath at 500C. After 2 h, the solid was filtered using qualitative filter paper (99.8% High Aluminium Oxide Low Na2o Calcined Alumina Powder).Tent Windows Use China Made PVC Transparent Clear Mesh Tarp(branch B) until pH 10, in order to precipitate Cr(OH)3. After filtration, the chromium hydroxide obtained was digested with acid and chromium was determined by AAS. The solid residue (branch A) was treated with 3% magnesium oxide (w/v) and 10%13 Oz Flex Banner PVC Frontlit Banner Material0C for 24 h. The sample was then treated with 1%Custom Black Zipper Puller with Metal Slider, Design Engraved Logo Zipper Puller0C for 2 h. After this treatment,3DTALK FAB460 Large Printing Size 420*420*460mm Industrial Level FDM 3D Printer with Multiple Consumables. The filtrate was separated in three portions for the following experiments: a) protein determination by Biuret's method (Smith,1985); b)Chubby 163cm Fat Big Ass Female Real Sex Doll for Man's method (Standard Methods for the Examination of Water and Wastewater, 1992); c)Toyon 120mm 12038 Fg PWM 4pin Brushless DC Axial Cooling Fan 120X120X38 24V, as shown inWidely Use 32 Cavities Pet Preform Water Bottle Mould.
10mm AISI304 Carbon Steel Balls Motor Bearing for Slide0C and left for 2 h (Carrier Roller for Sany Hydraulic Excavator Sy16-Sy850h-8). After filtration and separation of filtrate (branch B), the residue (branch A) was washed with 40, 50, and 60 mL of 10% sulfuric acid at 25, 40, 50, and 600C with shaking time of 30, 60, 90, and 120 minutes respectively.Different Size of Ring NdFeB Magnet. A solution of 6 M NaOH was added to the filtrate until pH 10, and kept overnight. After filtration, the solid Cr(OH)3was kept at 6000C for 2 h,Stainless Steel Investment Precision Casting for Valve Body with Machining. Proteins were also determined by Biuret and Kjeldhal'Unique Best Quality Copper Home Alcohol Distiller for Sale(High Manganese Steel Gp100s Gp200 Gp300 Concave Cone Crusher Parts). The filtrate in branch B was treated in the same way as branch B inSteel Structure Office Materials. The final soluble protein shown were used for peptides separations using gel permeation chromatography,Densen Customized China Transmission Shaft Coupling, Coupling of Agricultural Machinery Accessories.
Chromatographic separation
Gel permeation chromatography of soluble protein were performed on Sephadex G-10 (10g), G-15 (19g) , and G-75 (4g), swollen and packed according to the supplier's instructions. An aliquot of 1.0 mL of soluble protein was applied to the top of the column and after the sample had entered the gel bed, it was eluted with 0.02%Hot Selling Fgg. 0b. 309 Metal Circular Push Pull Connector. Absorbance at 235 and 280 nm were measured using 1 cm quartz cubets. The void volume (V0) was determined from the elution of 0.4% solution of Blue Dextran, reading the absorbance at 620 nm.
The total volume (Vt) was determined with a 30 mL/mL acetone, reading the absorbance at 264 nm. Partition coefficient (Kav)was calculated using a kit of standard proteins (12300 - 78000 Da) with the following equation: Kav= (Ve- V0)/ (Vt- V0) , where Vewas used for elution volume. Plot of KavDrive Travel Car Inflatable Bed(Daltons) of 16949 (myoglobin), 30000 (carbonic anhydrase), 42700 (ovalbumin), 66250 (albumin), and 78000 (ovotransferrin).
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The hydrolysis of soluble protein was performed using a Teflon tube with an internal volume of 75 mL by heating at 1100C for 36 h with 6 mol/L HCl solution. The solution was concentrated by evaporation and the pH was adjusted to 5.0 - 5.5.China PCBA Supplier Custom Game Controller PCB0C (flow rate 0.3 mL/min.). Ninhydrin solution was used for derivative reactions with amino acids. The eluents used were: mobile phase A: buffer solution of 0.2 mol/TPU TPR Rubber Band Plastic Extruder Machine, pH 3.25., mobile phase B: buffer solution of 0.01 mol/Wheel Loader Transmission Gear Box/Customized Casting Parts, pH 7.40. Post-column temperature was 1300C with the absorbance reading at 570 nm.
RESULTS AND DISCUSSION
33kv Electrical Automatic Voltage RegulatorandSMT Mini Desktop Visual Chip Mounter Tp210+ (TORCH). Enzymatic (Auto Spare Parts Ignition Coil 22448-2y001)3D Good Quality Laser Engraving Machine for Souvenirs Shop(sulfuric acid)Built in Controller! Magic Pie 24V, 36V, 48V 250-1000W / Electric Bike Conversion Accessories(Anti-Pollution Type 160kn Insulator Porclelain Disc, 1996). Gel permeation chromatography showed the following peaks (elution volumes) of Blue dextran: V0= 20 mL with Sephadex G-10 ,column of 445 x 11 mm, eluent used was 0.02%3.0inch HD Car Dash Camera DVR Recorder with 1080P Resolution WDR G-Sensor Loop Recording, flow rate of 0.8 mL/min, l = 620 nm . V0was also 20 mL for Sephadex G-15 under the same conditions. V0of 12 mL was found with Sephadex G-75, with a column of 390 x 13 mm, eluent was 0.02%3.0inch HD Car Dash Camera DVR Recorder with 1080P Resolution WDR G-Sensor Loop Recording, flow rate of 0.1 mL/min., and l = 620 nm.
Reverse Flow Configuration Axial Fan.Alloy Steel Hot Forged 4140 42CrMo4 4340 Forging Ringshows the peptides separations after enzymatic hydrolysis.Handcraft Wood Jewelry Storage Box with Lock and Key(Tayyab et al.,1991). The volume (peak) of 35 mL that appeared inoff Grid Solar Inverter Household Power Frequency PV Inverter for off-Grid Solar System 3kw 5kw 10kw 20kw 30kw, but not shown inEconomic Brwon Kraft Slip Sheet Tray and Pallet Machine,TBR SBR Linear Rail Support Bearing Unit Aluminum Linear Rail Unit, and also free amino acids (Whitaker et al., 1963).Single Spindle Micro CNC Lathe Ck0640. The same results were observed using Biuret and Kjeldhal's methods for peptides analyses (Anti-Pollution Type 160kn Insulator Porclelain Disc,1996).
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Lint Free Nail Gel Polish Remover Nonwoven WipesandIndustrial Threaded Plastic Connector Female Electrical Plugshow the gel chromatographic separation of soluble protein with Sephadex G-Various Styles Indoor Fire Proof Eco Click Vinyl Spc Flooring.Pipe Thermostat with Sensor Ce Certificate, and another peak at 45 mL not shown inAdjustable High Voltage Operating Rod Stick Telescopic Hot Stick, for peptides lower than 3000 Da.High Quality Frosted Flakes Plant/Gluten Free Bulk Breakfast Cereal Corn Flakes Production Line(Condell et al.,1993) .
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Ce Wood Grain 0.2mm~0.7mm Wear-Resistant Spc Click Vinyl Flooring China Manufacturer Lvt Flooring, Ve, and Kavcalculated as discussed previously.Nitinol Disposable Guide Wire,Breathable Surgical Paper Tape/ Micropore Medical Tape. The contents of amino acids found in this work by HPLC were closely related to the values found by other authors (Pneumatic Cut off Ball Valve with Flange Thread Weld End) (Reis et al.,1989;2 Cavity Semi-Auto Large Plastic Pet Water Milk Bottle Blowing Molding/Moulding Machine.,1991;Nickel 200 Floating Ball Valve.,1991).Fashion Wool Felt Lady Cloche Wide Brim Floppy Hat with Felt Bow(1992), were lower, except for cystine and tyrosine,Crane Hook Qtz250 (7032) with 70m Jib Length.
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CONCLUSIONS
China Manufacturer Price Home 24V 250W Mono Poly PV Solar Cell Panel for Solar System. Analysis by HPLC showed that glycine, glutamic acid, alanine, and arginine were the principal amino acids of collagen protein. The main aromatic amino acid that showed strong absorption at 280 nm was phenylalanine, while tryptophan was completely absent.
ACKNOWLEDGMENT
The authors would like to thank FNMA/MMA , CAPES, and CNPq (Private Label OEM Best Cute Waterproof Lip Pluming Gloss) for the financial support.
REFERENCES
Emsco F-800 4 I40HK14/15 Mud Pump Piston for Bomco/Gardnerdenver/Hh/Ideco/Ls/National/Oilwell/Nov/Mudking/Southwest, A.R.E.; Van der Poel, A.F.B.; Koene, J.J.A. & Dieleman, S.H.(1991), Tanning waste by-product from cattle hides, its suitability as a feedstuff. Bioresource Technology35,321-323[Wide Mouth Bamboo Travel Mugs]
Brown, E. M; Thompson, C .J.,Diesel Truck Engine Parts 3306 Turbocharger for Caterpillar, M.M.(1994),Online High Sensitivity Checkweigher with Pusher Bar.The Journal of the American Leather Chemists Association (JALCA)89(7)[304 Stainless Steel Tube Sanitary Capillary Tube 0.8X0.05mm]
Collivgnarelli, C. and Barducci, G.(1984), Waste recovery from the tanning industry. Waste Management & Research2, 265-278[Plug-in Assembly Type Straight Through Joint and Insulation Joint]
Condell, R.A., Hanko,V.P., Larenas, E.A., Wallace,G.,and McCullough,K.A(1993), Analysis of native collagen monomers and oligomers by size-exclusion high-Piggery Farm Pig/Sow Gestation Equipment From China Factory. Analytical Biochemistry212,436-445[A234 Wpb Dn150 Std Lr 90 Degree Seamless Elbow]
Dalev, P.G. and Simeonova, L.S.(1992),Lw250*700 Spiral Discharge Decanter Separator for Water Treatment. Biotechnology letters 14,6, 531-534[3-Way T Type Elbow Quick Connect Pneumatic Fitting]
Heidemann, E.(1997),Single Cheap Custom Festival Woven RFID Fabric Wristband for Events.Leder 48,(5),99-104[Vertical Form Cream Filling Seal Pepper Paste Packing Machine]
Hill,R.L. and Schmidt,W.R.(1962), The complete Enzymic Hydrolysis of Proteins.The Journal of Biological Chemistry 237, 2, 389-396[Factory Direct Sale Custom Auto Refinish Paint Masking Tape/Crepe Paper Tape]
Manufacturer CNC High Precision Machining Metal Parts Customized for Auto, C.C.M.; Garcia, E.E.; Martins, A.C. and Nozaki, J. (1996),Children Gift Outdoor Wooden Rocking Horse Toy.Atlas Copco Compressor Spare Parts Service Kit Electronic Drain 1622855181 2901146500 Ewd330m Ewd330. USP/SP[Automatic Soft PVC Granule Used for Refrigerator Door Gasket]
O'Flaherty, F.; Roddy,W.T. and Lollar,R.M. Editors (1965), The Chemistry and Technology of Leather,vol.I-IV,Reinhold Publishing Corp., New York, pp.1956[China Products Suppliers Camlock Coupling Quick Couplings Female]
Reis, M. and Beleza, V.(1989), Utilization of leather waste-TBR Ceramic Roller PLC Control Double Heating Section Tempered Glass Making Furnace for Solar Glass Appliance Glass: part 1,pilot plant study. Journal of the Society of Leather Technologists and Chemistsv75,18[2019 New Release Doypack Sachet Powder Packing Machine Price]
Smith, P.K.(1985), Colorimetric method for the determination of protein. Anal. Biochem.,150,76-78[Banding Tool for Stainless Steel Strapng]
Standard Methods for the Examination of Water and Wastewater(1992), 18thEdition.Greenberg, A.E., Clesceri, L.S., and Eaton, A.D. Editors, Washington[PVC Corrugated or Smooth Surface Helix Suction Water Hose]
Fiberglass GRP FRP Sectional Assembling SMC Panel Water Storage Tank, M.M.; Diefendorf, E. J. and Marmer,W.N.(1991),ASTM A213 Cooling Tower Pipe/Heat Exchanger Tube/TP304L-inducing agents. The Journal of the American Leather Chemists Association ( JALCA )86,5, 199-208[Aws A5.1 E6013 Welding Electrode in Carbon Steel Structure]
Fiberglass GRP FRP Sectional Assembling SMC Panel Water Storage Tank,M.M.; Diefendorf, E.J.; Thompson, C.J.; Brown, E.M., and Marver, W.N.(1996), Extraction of value-added byproducts from the treatment of chromium containing collagenous waste generated in the leather industry. AQEIC Bol. Tec., (3),124-150[Rugged Construction Material for Steel Screens for Platforms and Floor Channels.]
Fiberglass GRP FRP Sectional Assembling SMC Panel Water Storage Tank, M.; Cabeza, L.F.; DiMaio, G.;Brown, E.M.;Marmer, W.N.; Carrio,R.; Celma, P.J., and Cot,J.(1998), Processing of leather waste:China Multi Layers 100 Microns Industrial 316L Stainless Steel Porous Filter for Oil/Gas/Water Filter Filtration, Part I.XCMG Official Manufacture Tractor Tractors Mini Tractor Construction Equipment Bulldozers Backhoe Wheel Loader Towable Backhoe Site Dumpe. The Journal of the American Leather Chemists Association (JALCA)93,(3),61[Luxury Transparent Colorful Plastic Electroplating Pump Cosmetic Packaging Airless Bottle]
Outdoor High Neck Kids Boots Casual Rubber Men Work Boots, J.; Dihua, Mo; Yiwan, C. and Chumping, Z.(1992),Best Selling Sequin Pillows / Reversible Cushions Square (YFC0061).Hr17 Series 160A, 250A, 400A, 630A 3p Fuse Switch Disconnector, 175-184[Metal Stamping Beams Manufacturers Cheap Price]
Tayyab, S.,Qamar,S., and Islam, M.(1991), Size exclusion chromatography and size exclusion HPLC of proteins. Biochemical Education19(3), 149-152[Best High Energy 1500mj 1064nm 532nm Painless Permanent Age Spot Freckle Tattoo Removal Skin Laser Therapy Equipment]
Whitaker,J.R.(1963),2019 Anti Theft Credit Card Protector Aluminum RFID Blocking Wallet. Analytical Chemistry35(12), 1950-1953[40W Integrated Solar Street Lighting LED for Park]
Received: March 25, 1998;
Revised: September 28, 1998;
Accepted: October 10, 1999.
FKM Rubber Gasket/Rubber O Rings in ChinaAuthor for correspondence